Tintin Book Covers Quiz

I enjoy the Tintin Quiz on this website, but was curious to know the answer to Question no.19: What cover depicts New Zealand?
To my knowledge none of them do. Could anyone enlighten me which cover it is and why?

Thanks!

So pleased to hear that you enjoyed the quiz. I must let the Gelzer brothers know.

The answer to Q19 is Explorers on the Moon. See our planet Earth on the top left corner of the cover? You can see New Zealand, a fraction of Australia, Indonesia, and North America.

Recently Paul (Durdin) suggested that I made the quiz interactive. I thought it was a great idea, so I wrote to the authors of the quiz, the Gelzer brothers and asked for their permission to modify their work. The Gelzers are fine with the idea, and they want to play a part in making the changes. We are now just trying to figure out how best to turn the existing quiz into a multiple choice one, without having to rewrite the whole thing.

That interactive quiz sounds like a great idea!
Thanks for the answer to Q19, I understand now. I was confused to begin with.
Irene or anyone else, do you know why Tintin never had an adventure in Australia? That would have been cool and its not like its a small country or anything! I'm just curious to find out why.

Thanks!